Cameron, from what I can see, there is 'Unfinished Content' in lessons 2.10: VFR Instructions & Bravo Clearances and 2.11: Requirements for Class B/C/D Airspace.
Benjamin, while there is a VATSIM standard to be met you should consult your local facilities policies. The one thing VATSIM is expecting is '_OBS' at the end of the callsign. Here at Indianapolis (ZID) our policy calls for ZID_(inits)_OBS.